Improvement in cameras



3 Sheets-Sheet 2.

l. & l. STOGK. Cameras.

Patented Oct. 20,1874.

N0.l56,l06.

a Sammy -Sheet 3.

3 Sheets- `l. & J. STOCK.

Cameras.

Patented Oct. 20,1874.

UNITED STATES PATENT QErroE JOHN STOCK AND JACOB STOCK, OF NEYV YORK, N.Y.

IMPROVEMENT IN CAMERAS.

Specification forming pari of Letters Patent No. 156,106, dated October20, 1874 application `liled f March 7, 1874.

To all whom t may concern:

Be it known that we, JOHN STOCK and J A- con STOCK, both of the city ofNew York, in the State of New York, have invented a new and usefulImprovementin Photographic Cameras, of which the following is adescription:

The nature of our improvement consists in the manner of regulating themovable part of the camera in its relation to the iixed part of thecamera, and further in the construction of the corners in theplate-holder to adapt the same to different sizes of plates.

In the accompanying drawing, Figure I is a horizontal section of acamera embodying our improvements. Fig. II is a plan of the bed of thesame. Fig. III is a front view of the plate holder, with section of thebed or ways. Fig. IV is a` longitudinal section of the camera. Figs. Vand VI are front views of the plateholder.A Fig. VII is a section atline .fr x of Fig. V. Fig. VIII is a section at line ze, Fig. VI. Fig.IX is a section of the bed or ways on which the camera-box moves,showing va diierent arrangement. Figs. X and XI are end view and sectionof arrangement for closing the tube.

Similar letters represent similar parts in all the iigures.

A is the bed or the ways on which the camera-box is made to move. Thecamera consists of the stationary part B attached to the forward part ofthe bed, and of the movable part C C attached to a bed-plate, D. On oneside of the bed A a rail, a, is firmly attached to said bed, working ina bracket, E, fast to the under side of the bed-plate D, and providedwith friction-rollers b, against which the rail a is made to bear. (SeeFigs. II and III.) Opposite to this rail a a bolt or bar, F, is arrangedin the bed A, upon which a frame, Gr, attached to the bed-plate B, ismade to slide. By this arrangement the bed-plate D, and consequently thecamera-box, attached to the same in the manner hereafter described, willbe guided and supported by the rail a and the bolt or bar F, and aperfectly smooth, regular, and steady motion of the camera-box will beobtained. The bed-plate D, and consequently the camera-box C C, is iixedand fastened at any desired distance from the stationary box B by meansof the screw-frame and bolt II,

working in the central part ot' the bed A in the usual manner. Insteadof the rail a and bolt or bar F, arranged within the bed A, as abovedescribed, rails a may be arranged on each side on the outside of thebed or ways A, (see Fig. IX,) workin g in similar frames E on thebed-plate D. rIhe camera-box C is made to turn upon a pin, d, attachedto the,

bed-plate D, and is provided with brackets J J ou its under side,working on the segments J J fast on the bed-plate D. (See Figs. II, III,and IX.) By this arrangement this box C is held iirmly secured to thebed-plate D, and capable of turning around its center-pin d. On one sideof this box C a nut, K, is attached, into which a screw-bolt, K turningin a bracket, K fast to the bedplate D, is made to work, in such amanner that b v the motion of said screw-bolt K in the nut K thiscamera-box C can be moved backward and forward around the central pinCZ, as may be desired. To each side ofthe box C brackets L L (see Figs.I and IV) are securely fastened, to which the after part ot thecamera-box C is attached, capable of a vibrating motion around its pinsg. A nut, N, is attached to one side of the box C, into which ascrewbolt, N turning in a fixed bracket, N, attached to the box C, ismade to work, in such a manner that by means of said screw-bolt N',working in the nut N, the after part of the camera-box C can be made tovibrate on said bolts or pins gin any desired direction. M is theplate-holder, constructed in the usual manner, and attached to theafter-end of the camera-box C.

By the above described arrangement of turning the camera-box C, andconsequently the after part C, which is attached to said box C, asdescribed, around the central pin d, and at the same time vibrating theafter-box C on the pins g, the plane oi' the plateglass in theplateholder M can be moved in any desired position or inclination inrelation with the glass tube or tubes iixed to the stationary part Bofthe camera, while by the mechanism, consisting of the screw-bolts andnuts, through which the desired position or inclination is obtained andregulated, the camera-boxes C C are at the same time securely fastenedin this position, without the .necessity of any further mechanism.

The glass tube or tubes (not shown in the drawing) are fastened to asliding frame, P, arranged in the stationary box B. This slide P isprovided with rollers h la on the bottom, to insure an easy and steadymotion to said slide, and is provided with projections p p on each side,which, in combination with slides p p', operate in such a manner as tokeep the large opening in the stationary box B always closed, to preventthe admission ot' light to the inside of the camera whenever the slide Pis moved backward or forward, as may be desired. In the camera-box C amovable diaphragm or light-board, Q, is arranged. The slide P in thestationary box B, and the lightboard Q in the box C are connectedthrough the rods It R It, so that both will be moved at the same time,and the connecting-rod It (see Figs. I and IV) is madein such a manneras to allow any variation between the stationary box B and the positionof the movable part ot' the camera-box C.

By this arrangement, whenever two, three, or more pictures are to betaken on the same plate, the tube or tubes on the forward end of thecamera are moved, while the plate-holder can be fixed securely againstthe camera-box C. For larger and single pictures the slide P, andeonsequentl y the tube, is moved into the center of the camera, and themovable lightboard Q is removed from the camera-box C.

Over the opening S in the partition-plate T, at the back of the slide P,a shutter, IV, is hinged, (see Figs. I and IV,) to which a cord, n,passing to the top of the box C', is attached, for the purpose ofoperating said shutter W. A spring, yw, is attached on the top of thecamera-box C, (see Fig. I,) under which the cord a passes, to hold thesame and to relieve the same and close the shutter IV instantaneouslywhen required.

Instead of hinging the shutter W as above described, the same may bearranged, as shown in Figs. X and XI, so as to turn on a pin, c, andmade to move sidewise to uncover the opening S. This arrangement isapplicable when the distance between the stationary box B and thecamera-box Cl is not sui'licient to allow the swinging ot' the shutter.

The vitritied or other suitable corners Y are made with projections m tofasten the same into the wooden frame of the plate-holder M, (see Figs.V, VI, VII, VIII,) and with two 'aised angle-pieces, c and c", situatedone inside the other, leaving a passage or channelway between them toallow any moisture to :tlow readily away. The plate-glass may by thisarrangement be held either within the corner of the inner angle-piecec', as shown in Figs. VI, VIII, or the same may be held against theedges of the inner angle piece c and the surface ot' the outerangle-piece c, as shown in Figs. V and VII, accommodating thereby anysize of glass.

What we claim as our invention, and desire to secure by Letters Patent,is-

l. The combination of the camera-boxes C and Cl with the nut N andscrew-bolt N', substantially as set forth.

2. The slide P in the stationary box B, provided with projections p p,in combination with the slides p p', arranged and operating in themanner substantially as set forth.

3. The combination of the slide P, to which the lens tube or tubes areattached, the diaphragm or light-board Q, and the rods It It It, whenconstructed, arranged, and operating substantially in the manner and forthe purpose set forth.

et. The movable shutter IV against the opening S, in the inside of thecamera-box B, operated by a string or cord, a, substantially as hereindescribed and set forth.

5. The plate-holder, having two angle-pieces, c c, placed inside of eachother in each corner, in the manner and for the purpose specified.

J CHN STOCK. JACOB STOCK. Witnesses:

HENRY E. ItonDEn, C. THORNTON.

